Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d4fe6bda844739b…

MALICIOUS

PDF

35.0 KB Created: 2021-06-25 16:10:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 91a02d259ece2a70d5373de900d70965 SHA-1: 3535a59adc3902ce259dcc0119985a14a0c96dfa SHA-256: 8d4fe6bda844739b1bcf3cd87be5a536ba9bbaf0130fcc4b68d7ddda4f3f49e4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action lure, directing users to websites offering game hacks and exploits. The primary URL, http://netcdn.co/app/431946152/free-roblox-exploits-no-download-game-hack, is flagged as a high-risk redirector. While no scripts were explicitly extracted, the document's structure and embedded URLs strongly suggest it's designed to lead users to a malicious download or phishing site, likely leveraging a PDF exploit or social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/free-roblox-exploits-no-download-game-hack PDF link annotation
    • http://perpustakaan.stietenggarong.ac.id/repository/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-free-robux-may-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-hack-tips_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-hack-2021-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/long-pastel-hair-roblox-free-to-purchase_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/john-doe-roblox-hacker-wikipedia_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-critical-strike-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-robux-codes-2021-wiki_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-how-to-look-cool-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3081 22232 bytes
SHA-256: 3835c690a96309a5449f76cc2974d2a70311fdcb743bd175dcc7e7621e9131c9
font_01_sfnt_off00006207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6207 19556 bytes
SHA-256: 68d308728c86ccd7f012043818dc1c9345902dedb375005fd2fb13e20d3bca11

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